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Features Update - v0.2.0

🎉 New Features

1. Persistent Database (SQLite + Prisma)

  • Repository analyses are now saved to the database
  • Chat sessions and messages are preserved
  • Full conversation history available
  • Pagination support for large histories

2. Chat History Sidebar

  • View all previous analysis sessions
  • Quick access to past conversations
  • Session titles and repository info
  • Date-based sorting

3. API Routes (Backend Persistence)

  • POST /api/repositories — Save repository analysis
  • POST /api/chat — Create chat session
  • POST /api/chat/[sessionId] — Add messages to session
  • GET /api/history — Retrieve analysis history with pagination

4. Custom React Hooks

  • useRepositoryAnalysis() — Save analysis data
  • useChatSession() — Create and manage chat sessions
  • useChatMessages() — Add and retrieve messages
  • useHistory() — Fetch conversation history

5. Enhanced UI Components

  • ConfigStatus — Visual indicator for API key configuration
  • ErrorBoundary — Graceful error handling
  • HistorySidebar — Session navigation
  • Toast — User notifications
  • Skeleton — Loading placeholders

6. Error Handling & Resilience

  • Exponential backoff retry logic for database timeouts
  • Windows SQLite optimization (10-second timeout)
  • Graceful fallback to offline mode
  • Detailed error messages with setup instructions

7. API Key Validation

  • On-the-fly API key detection
  • User-friendly error messages
  • Setup wizard display when key missing
  • Clear configuration instructions

🏗️ Architecture Improvements

Backend

  • RESTful API design with proper status codes
  • Zod schema validation on all inputs
  • Type-safe Prisma ORM integration
  • Comprehensive error handling

Frontend

  • Client-side retry logic for failed requests
  • Offline-first UI design
  • Database initialization on component mount
  • Proper error propagation to user

Database

  • SQLite for local development
  • Proper indexing for performance
  • Referential integrity (foreign keys)
  • Migration system in place

📊 Data Models

Repository

Stores GitHub repository metadata and analysis results

ChatSession

Represents a conversation about a specific repository

ChatMessage

Individual messages within a conversation

Analysis

AI-generated analysis of repository structure and technologies

🚀 Getting Started with New Features

  1. Configure API Key

    # See API_SETUP.md for detailed instructions

  2. Start Dev Server

    npm run dev

  3. Analyze a Repository

    • Enter GitHub URL (e.g., facebook/react)
    • AI generates analysis
    • Data saved to database

  4. Chat About Repository

    • Ask questions about code
    • Conversation history saved
    • Access from History sidebar

🔄 Migration from v0.1.0

If you were using the previous version:

  1. .env.local file structure unchanged
  2. Add NEXT_PUBLIC_GEMINI_API_KEY (if not present)
  3. Database schema auto-migrates on first run
  4. No data loss from existing features

🐛 Known Issues & Limitations

SQLite Windows Compatibility

  • File locking requires 10-second timeout
  • Not suitable for high-concurrency scenarios
  • Upgrade to PostgreSQL for production

API Rate Limits

  • Google Gemini: Subject to quota limits
  • GitHub API: Check rate limits in documentation

📝 Configuration Files

  • .env.local — Environment variables
  • prisma/schema.prisma — Database schema
  • src/lib/prisma.ts — ORM configuration
  • API_SETUP.md — API configuration guide
  • DATABASE.md — Database documentation

🔗 Related Documentation

📈 Future Enhancements

  • Export analysis as PDF
  • Collaborative chat sessions
  • Code snippet suggestions
  • Repository comparison
  • Advanced search/filtering
  • User authentication
  • Cloud deployment examples